257340616859 has 8 divisors (see below), whose sum is σ = 264302164560. Its totient is φ = 250379405856.

The previous prime is 257340616837. The next prime is 257340616909. The reversal of 257340616859 is 958616043752.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 257340616859 - 2¹⁶ = 257340551323 is a prime.

It is a super-3 number, since 3×257340616859³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (257340696859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2648957 + ... + 2744385.

It is an arithmetic number, because the mean of its divisors is an integer number (33037770570).

It is a 1-persistent number, because it is pandigital, but 2⋅257340616859 = 514681233718 is not.

Almost surely, 2^257340616859 is an apocalyptic number.

257340616859 is a deficient number, since it is larger than the sum of its proper divisors (6961547701).

257340616859 is an equidigital number, since it uses as much as digits as its factorization.

257340616859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168349.

The product of its (nonzero) digits is 10886400, while the sum is 56.

The spelling of 257340616859 in words is "two hundred fifty-seven billion, three hundred forty million, six hundred sixteen thousand, eight hundred fifty-nine".